#pragma once
#include<vector>
using namespace std;
class String {
private:
	char* data;
public:
	String(const char* str = NULL);
	String(const String& other);
	String(String&& other);
	String& operator=(const String& other);
	String& operator=(String&& other);
	~String();
	int length() { return strlen(data); }
	/*
	其它功能
	*/
};

String::String(const char* str) {
	if (str == NULL) {
		data = (char*)malloc(1);
		*data = '\0';
	}
	else {
		data = (char*)malloc(strlen(str) + 1);
		char* buffer = data;
		while ((*buffer++ = *str++) != '\0');
	}
}
String::String(const String& other) {
	data = (char*)malloc(strlen(other.data) + 1);
	char* buffer = data;
	const char* odata = other.data;
	while ((*buffer++ = *odata++) != '\0');
}
String::String(String&& other) {
	data = other.data;
	other.data = NULL;
}
String& String::operator=(const String& other) {
	if (this == &other) return *this;
	if (data != NULL) free(data);
	data = (char*)malloc(strlen(other.data) + 1);
	char* buffer = data;
	const char* odata = other.data;
	while ((*buffer++ = *odata++) != '\0');
	return *this;
}
String& String::operator=(String&& other) {
	if (this == &other) return *this;
	if (data != NULL) free(data);
	data = other.data;
	other.data = NULL;
	return *this;
}
String::~String() {
	if (data != NULL)
		free(data);
}

